package org.apache.maven.surefire.junitcore.pc;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import java.util.concurrent.atomic.AtomicBoolean;

 /**

  * The sequentially executing strategy in private package.

  *

  * @author Tibor Digana (tibor17)

  * @since 2.16

  *

  * @see SchedulingStrategy

  */

 final class InvokerStrategy extends SchedulingStrategy {

     private final AtomicBoolean canSchedule = new AtomicBoolean(true);

     @Override

     public void schedule(Runnable task) {

         if (canSchedule()) {

             task.run();

         }

     }

     @Override

     protected boolean stop() {

         return canSchedule.getAndSet(false);

     }

     @Override

     public boolean hasSharedThreadPool() {

         return false;

     }

     @Override

     public boolean canSchedule() {

         return canSchedule.get();

     }

     @Override

     public boolean finished() throws InterruptedException {

         return stop();

     }

 }